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  2. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    Fluorescent-lamp formats. Fluorescent lamps in various embodiments. Since their introduction as a commercial product in 1939, many different types of fluorescent lamp have been introduced. Systematic nomenclature identifies mass-market lamps as to overall shape, power rating, length, color, and other electrical and illuminating characteristics.

  3. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    Fluorescent lamp efficacy is dependent on lamp temperature at the coldest part of the lamp. In T8 lamps this is in the center of the tube. In T5 lamps this is at the end of the tube with the text stamped on it. The ideal temperature for a T8 lamp is 25 °C (77 °F) while the T5 lamp is ideally at 35 °C (95 °F).

  4. LED tube - Wikipedia

    en.wikipedia.org/wiki/LED_tube

    LED tube. LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’.

  5. Troffer - Wikipedia

    en.wikipedia.org/wiki/Troffer

    Troffer. A troffer is a rectangular light fixture that fits into a modular dropped ceiling grid (i.e. 2' by 2' or 2' by 4'). Troffer fixtures have typically been designed to accommodate standard fluorescent lamps ( T12, T8, or T5 ), but are now often designed with integral LED sources. Troffers are typically recessed sitting above the ceiling ...

  6. Electrical ballast - Wikipedia

    en.wikipedia.org/wiki/Electrical_ballast

    An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit . A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube, which would otherwise rise to a destructive level due to the negative differential resistance of the ...

  7. T5 retrofit conversion - Wikipedia

    en.wikipedia.org/wiki/T5_retrofit_conversion

    T5 lamps are approximately 40% smaller than T8 Lamps. T5 lamps have a G5 base while T8 lamps use a G13 base. Conversion technology. Conversion kits are available which will work in existing fittings containing switch start, mains frequency fluorescent lamp ballasts. The kits convert the fittings to use energy efficient, high frequency ballasts ...

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